TABLE 2.

Mean percentages and standard deviation (SD) of the minimum wall thickness measurements at 3, 5 and 7 mm from the root apex

	Group I			Group II
	Initial (mm)	Reciproc/Mtwo (mm)	SAF (mm)	Initial (mm)	Reciproc/Mtwo (mm)	H file (mm)
3 mm	0.97±0.38aA	0.89±0.35bA	0.81±0.33cA	0.93±0.39aA	0.83±0.34bA	0.74±0.30cA
5 mm	1.05±0.45aA	0.96±0.47bA	0.89±0.44cA	0.96±372.9aA	0.85±0.37bA	0.78±0.37cA
7 mm	1.25±0.57aA	1.11±0.55bA	1.01±0.50cA	1.23±0.45aA	1.07±0.46bA	0.898±0.42cA

Different lowercase letters represent significant differences in the intragroup comparison: Initial vs Reciproc/Mtwo vs SAF (Group I) and Initial vs Reciproc/Mtwo vs H file, while different uppercase letters were used for the intergroup comparisons: Initial between gorup I and II, Reciproc/Mtwo between gorup I and II and SAF vs H file comparisons (P<0.05).